Question

What are the multiplicative and additive inverses of -7?

A) multiplicative inverse: 1/7 ; additive inverse: 7
B) multiplicative inverse: -1/7 ; additive inverse: 7
C) multiplicative inverse: 1/7 ; additive inverse: -7
D) multiplicative inverse: -1/7 ; additive inverse: -7

Answer 1

b)

Explanation:

because a multiplicative inverse of a number is that number over 1 and additive inverse in that number as a negative

Answer 2

B.

Explanation:

Multiplicative inverse of a number is the number that completes the number to '1' when multiplied therefore the multiplicative inverse of -7 is -1/7

Additive inverse of a number is the number that completes the number to '0' when added therefore the additive inverse of -7 is 7